Practical guide and verification
Specify which ton you mean
The US short ton equals 2,000 pounds, while the imperial long ton equals 2,240 pounds. A metric tonne is a different unit again, so the word “ton” must be disambiguated before conversion.
The conversion can be exact once the unit is known
For US short tons, pounds = tons × 2,000 exactly. The appropriate displayed precision still depends on how accurately the original mass was measured.
Common mistake
Do not apply the short-ton factor to metric tonnes or long tons. Similar unit names can create large errors in shipping, materials and equipment calculations.